[Bug 108622] [CI][BAT] igt at drv_selftest@live_execlists - dmesg-warn - *ERROR* MMIO: GuC action 0x2 failed with error -5 0xf000f000

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Feb 16 00:47:11 UTC 2019


https://bugs.freedesktop.org/show_bug.cgi?id=108622

--- Comment #7 from Jon Ewins <jon.ewins at intel.com> ---
Agreed, this was too generic an update for this particular bug.  We are about
to upstream new patches for Gen9 and Gen11 that support a changed unified
interface to the GuC along with the corresponding firmware and so are deferring
further actions on current guc issues.  In this specific case, the existing
Gen9 guc preemption paths are no longer required and GuC submission on gen9
will not be supported. The imminent new guc code patches will initially disable
preemption with guc, but not touch/remove this code. Follow up patches will
reinstate GuC based preemption for Gen11+, at which time this code will be
cleaned up.  Certainly some of the current code can be cleaned up now, but How
the new preemption implementation will be staged in terms of H2G interactions
is tbd.

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